diff options
Diffstat (limited to 'firmware/target/sh/archos/ondio/powermgmt-ondio.c')
-rw-r--r-- | firmware/target/sh/archos/ondio/powermgmt-ondio.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/firmware/target/sh/archos/ondio/powermgmt-ondio.c b/firmware/target/sh/archos/ondio/powermgmt-ondio.c new file mode 100644 index 0000000000..8779857db1 --- /dev/null +++ b/firmware/target/sh/archos/ondio/powermgmt-ondio.c | |||
@@ -0,0 +1,51 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Heikki Hannikainen, Uwe Freese | ||
11 | * Revisions copyright (C) 2005 by Gerald Van Baren | ||
12 | * | ||
13 | * All files in this archive are subject to the GNU General Public License. | ||
14 | * See the file COPYING in the source tree root for full license agreement. | ||
15 | * | ||
16 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
17 | * KIND, either express or implied. | ||
18 | * | ||
19 | ****************************************************************************/ | ||
20 | |||
21 | #include "config.h" | ||
22 | #include "adc.h" | ||
23 | #include "powermgmt.h" | ||
24 | |||
25 | const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] = | ||
26 | { | ||
27 | 3100, 3450 | ||
28 | }; | ||
29 | |||
30 | const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] = | ||
31 | { | ||
32 | 2700, 2800 | ||
33 | }; | ||
34 | |||
35 | /* voltages (millivolt) of 0%, 10%, ... 100% */ | ||
36 | const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] = | ||
37 | { | ||
38 | /* measured values */ | ||
39 | { 2800, 3250, 3410, 3530, 3640, 3740, 3850, 3950, 4090, 4270, 4750 }, /* Alkaline */ | ||
40 | { 3100, 3550, 3630, 3690, 3720, 3740, 3760, 3780, 3800, 3860, 4050 } /* NiMH */ | ||
41 | }; | ||
42 | |||
43 | #define BATTERY_SCALE_FACTOR 4849 /* average from 3 Ondios */ | ||
44 | /* full-scale ADC readout (2^10) in millivolt */ | ||
45 | |||
46 | /* Returns battery voltage from ADC [millivolts] */ | ||
47 | unsigned int battery_adc_voltage(void) | ||
48 | { | ||
49 | return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10; | ||
50 | } | ||
51 | |||